Priming device



Feb. 27, 1923. 1,446,850. 1. w. ALE MAIRE.

PRIMING DEVICE.

FILED ocr.21,19zo.

Patented Feb, 2'?, 1923.r

Paname DEVICE. E;

Application filed 0ctobelv2l, 1920. Serial No. 418,523.

To all w71 om t may concern Be it known that I, JosnPI-I XVM. Ln Menen, a citizen ofthe United States, and resident of the city of Pittsield, in the county of Berkshire and State of li/iassachusetts, have invented certain new and useful Improvements in Priming Devices,of which the following is a specification. l f l The present inventionrelates to improvements in startingdevices for internal combustion engines, and more particularly 'to that type of starting device which is in tended to be used with engines upon motor vehicles, although it will be understood that it is applicable to engines used otherwise.

The main object of the invention is to provide a simple and inexpensive device, by the use of which a sufficient quantity of gasoline, to prime the engine, may be introduced int-o the cylinders of the engine, without the necessity of opening the hood of the motor vehicle to turn the pet-cocks of the various priming cups.

Another object of the invention is to construct a primingdevice in the form of a pump, the piston of which acts at the same time as a valve, closing the communication between the engine and the fluid containing tank of the priming device.

lVith these and other objects in view, which will more fully appear as the nature oi the invention is better understood, the same consists in the combination, :arrange- Y ment and construction of parts hereinafter described, lpointed out in the appended claim and illustrated in the accompanying drawings, it being understood 'that many changes may be made in the size and proportion of the several parts and details of construction within the scope of the ap pended claim. without departing from the spirit or sacrificing any of the advantages of the invention. Y

One of the many possible embodiments of the invention is illustrated in., the accom panyi g drawings, in which Figure 1 is a longitudinal vertical section taken through a priming device constructed in accordance with the present invention; and Fig. 2 is a front elevation of the same.

In the drawings, the numeral 10 indicates a reservoir, adapted to contain a suitable liquid hydrocarbon, such as gasoline, which is filled into the said reservoir through a dared opening 11, closed by a plug 12, the latter being provided with a vent-hole 13.

i rilass- This reservoir is attached in any suitable manner to the dash-board 14 of the vehicle, when the engine is applied to a motor vehicle,and is preferably disposed below the engine hood. The reservoir is provided with a small fuel outlet 15,'communicating'with 'the cylinder 16 of a'pump, that is shown in the drawings as being made integral with :the said reservoir, although it may be secured thereto 1n anyy suitable manner.v TheV fuel outlet is formed near the front head 17 i i ofthe pump ycylinder, the said front head being provided with a nipple 18, with which is joined a pipe 19,`the latter being connected, preferably, with the'intake manifold of the internal combustion engine, with which the priming device isintended to co:

operate. Y

In the pump cylinder isA mounted a piston 20 upon a pis-ton rod 21. This rod extends through the rear head 22 of the pump cylinder and terminates in a handle 23. The pis# ton may be of any suitable construction and of any suitable material, ,for instance cork.

rlhis -cork may be drawn over,v the piston rod and heldvthereon by disk stops 24 and 25, the latter being securedto the saidV n In front of Y the stop 24 is mounted a packing member,

rod in any suitable manner.

in the form of a 'washer 26 of any suitable material. The front end of the pistonrod is screw-threaded, as shownl at 27, the said threads being adapted to mesh with those of the pump outlet 28 inthe cylinderhead 17. Astop 29 is carried by the piston rod,

said stop being adapted to co-operate with the rear head 22 and serving to limit* the suction stroke of the piston.v

The operation of this device is as follows: s.

In the positions of the elements shown in Fig. 1 0f the drawings, the packing washer 26 snugly lits against the inner face of the front head 17 of the` cylinder and the pis-ton 20 covers the fuel outlet 15 of the tank 10, the threads o'f the piston rod meshing with those of the pump outlet. The communication between vthe tank and the engine manifold is thus closed. In order to operate the device, the piston rod is first turned anticlockwise in order to unmesh the threads on its suction stroke, in order to allow a substantial quantity of liquid tolow through the small fuel outlet into the pump cylinder. The piston is then moved quickly in the opposite direction, that is to say upon its expelling stroke. The fuel in the pump cylinder is thus injected through the pipe 19 into the intake manifold, from which it is drawn into the cylinders or' the engine. lVhen the piston has 'reached the end of its expelling stroke, it is .turned clockwise to screwthe vpiston vrod into'the pump outlet, so as to bring the packing WasherQ in proper engagement With the inner face of the front head 17 el. the pump cylinder. Although a single operation ot' the primer should be sui'licient under ordinary conditions, the operation can be repeated as often asidesired according tothe requirements.

' What claim is:

A priming device 'for internal combustion engines, comprising` va reservoir forcontaindental movement, said piston covering said opening when held Yby .the engagement of said rod and cylinder head against movement, and a packing Washer upon `said piston rod adapted to bear against the face of said cylinder head.

Signedat Pittsfield in the count7 of Berkshireand State Iof Massachusetts, this th dayv of September7 A. D. 1920.

JOSEPH XVlLLlA-M LE MAIRF 

